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Created attachment 17108 [details]
=== Overview ===
Nesting a master detail page in a tabbed layout on UWP can cause an exception when used with the modal page stack. Specifically if you have a master-detail page as a child of a TabbedPage, navigate to another child of the tabbed page and open a modal page, when you return from the modal page stack the master-detail page causes an exception when it's bounds are calculated. A workaround I have found for this problem is to set IsShowing on the page to false in the OnDisappearing method of the MasterDetail page.
I've attached a reproducing project
=== Steps to Reproduce ===
Run the attached repro project
1. Starts on the main page with a master-detail page nested within a tabbedpage
2. Navigate to "Page 2"
3. Click the button to open a modal page
4. Click the button on the modal page to return
=== Expected Behavior ===
The page stack should return to its location and state before pushing the modal page
=== Actual Behavior ===
An exception occurs:
at Windows.Foundation.Size..ctor(Double width, Double height)
at Xamarin.Forms.Platform.UWP.MasterDetailPageRenderer.OnControlLoaded(Object sender, RoutedEventArgs routedEventArgs)
=== Visual Studio===
Microsoft Visual Studio Community 2015
Version 14.0.25425.01 Update 3
Microsoft .NET Framework
Installed Version: Community
Visual Basic 2015 00322-20000-00000-AA412
Microsoft Visual Basic 2015
Visual C# 2015 00322-20000-00000-AA412
Microsoft Visual C# 2015
Visual C++ 2015 00322-20000-00000-AA412
Microsoft Visual C++ 2015
Application Insights Tools for Visual Studio Package 7.2.00808.2
Application Insights Tools for Visual Studio
ASP.NET and Web Tools 2015 (RC1 Update 1) 14.1.20203.0
ASP.NET and Web Tools 2015 (RC1 Update 1)
ASP.NET Web Frameworks and Tools 2012.2 4.1.41102.0
For additional information, visit http://go.microsoft.com/fwlink/?LinkID=309563
ASP.NET Web Frameworks and Tools 2013 5.2.40314.0
For additional information, visit http://www.asp.net/
AWS Toolkit for Visual Studio 2015 18.104.22.168
AWS Toolkit for Visual Studio 2015.
Copyright 2011-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
This software includes third party software subject to the following copyrights:
- Logging from log4net, Apache License
- Putty for PPK to PEM conversion, MIT license
- NGit for AWS Elastic Beanstalk incremental push
- NSch dependency for NGit
- Sharpen dependency for NGit
- ICSharpCode.SharpZipLib dependency for NGit
- Mono.Posix.dll and Mono.Security.dll dependencies for NGit
- MPFProj for Visual Studio Project Framework
- JSON Checker for JSON validation
Azure App Service Tools v2.7.1 14.0.11112.0
Azure App Service Tools v2.7.1
Common Azure Tools 1.8
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.
Microsoft Azure Mobile Services Tools 1.4
Microsoft Azure Mobile Services Tools
NuGet Package Manager 3.4.4
NuGet Package Manager in Visual Studio. For more information about NuGet, visit http://docs.nuget.org/.
PreEmptive Analytics Visualizer 1.2
Microsoft Visual Studio extension to visualize aggregated summaries from the PreEmptive Analytics product.
SQL Server Data Tools 14.0.60519.0
Microsoft SQL Server Data Tools
TypeScript tools for Visual Studio
Visual Studio Tools for Universal Windows Apps 14.0.25527.01
The Visual Studio Tools for Universal Windows apps allow you to build a single universal app experience that can reach every device running Windows 10: phone, tablet, PC, and more. It includes the Microsoft Windows 10 Software Development Kit.
Xamarin 22.214.171.124 (fcbe082)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.
Xamarin.Android 126.96.36.199 (1cf254d)
Visual Studio extension to enable development for Xamarin.Android.
Xamarin.iOS 188.8.131.52 (f37444a)
Visual Studio extension to enable development for Xamarin.iOS.
=== Operating System ===
Windows 10 Pro Version 1607 Build 14393.51
Should be fixed in 2.3.5-pre1. Thank you!
Verified on xamarin.form version 184.108.40.2066-pre6.
ScreenCast link : https://www.screencast.com/t/BrhYAPaF1hr
Hence marking it as verified